The Citation Tool can be found by clicking "more" in the control panel area of the viewer. From here you are able to share or add the video to your watchlist.
Click "...More" to open the menu where the "Citation Tool" is located.
Select the citation style from the styles presented.
You can copy the citation either by clicking the red "Copy text". Or by highlighting the text and using the "right-click" on your mouse and selecting Copy from the menu or by pressing the Ctrl and C buttons at the same time. Paste the citation in your document to save.